package cn.dicraft.netty.server;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.Charset;

/**
 * @author 烛远
 * @date 2024/12/26 13:53
 */
@Slf4j
public class EventLoopServer {
    public static void main(String[] args) {
        // 划分职责，boss & worker
        // 细分2: 创建新的独立的eventLoopGroup, 分离业务操作
        EventLoopGroup group = new DefaultEventLoopGroup();
        new ServerBootstrap()
                // boss->parentEventLoopGroup 负责处理accept事件， worker->childEventLoopGroup 负责处理 socketChannel 上的读写
                .group(new NioEventLoopGroup(), new NioEventLoopGroup(2))
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel ch) throws Exception {
                        ch.pipeline().addLast("handler1",new ChannelInboundHandlerAdapter() {
                            @Override // ByteBuf, 字节数据
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                ByteBuf buf = (ByteBuf) msg;
                                log.debug(buf.toString(Charset.defaultCharset()));
                                ctx.fireChannelRead(msg); // 将消息传递给下一个handler
                            }
                        }).addLast(group, "handler2", new ChannelInboundHandlerAdapter() {
                            @Override // ByteBuf, 字节数据
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                ByteBuf buf = (ByteBuf) msg;
                                log.debug(buf.toString(Charset.defaultCharset()));
                            }
                        });
                    }
                }).bind(8080);
    }
}
